Multi-single open position: the abbreviation of multi-single open position means that the position has increased, but the added value of the position is less than the current position, which belongs to active buying. For example, suppose four people are counterparties, in which A hangs out 1 sells to close the position, B hangs out 10 sells to open a position, and C sees that there is a 1 1 hand pending order at the selling position, that is, five hands are hung out to buy a position, and the disk display will be: multi-opening, spot transaction/kloc.

Short position: short position means that the position has increased, but the added value of the position is less than the current position, which belongs to active selling; For example, selling and buying in the above example can be reversed.

Double opening: in a transaction, the opening amount is equal to the spot amount, the closing amount is zero, the position is increased, and the price difference is equal to the spot amount, indicating that both long and short positions increase their positions.

Double flat: refers to a transaction where the opening amount is equal to zero, the closing amount is the current amount, the opening amount is reduced, and the difference is equal to the current amount, indicating that both long and short positions have reduced their positions.

Change more and change less: short for change more and change less. If in a certain transaction, the opening position and the flat position are equal to half of the current trading volume, and the positions remain unchanged, it means that the long position and the short position have not changed, but some positions have been transferred between the long position and the short position. Combining the state of internal market and external market, we define the trading state of internal market as multi-exchange and empty exchange.

Multi-level and short-level: referred to as long positions and short positions. Long position closing refers to the reduction of positions, but the absolute value of position increase is less than the current quantity, which belongs to active selling; Short position means that the position is reduced, but the absolute value of the position increase is less than the current quantity, which belongs to active buying. For example, suppose three people are counterparties, in which A has five long positions, B has five short positions and C has no positions; If Party A wants to close some positions, it will sell 3 positions; Party C thinks that the market will fall and sells 2 positions; If Party B also wants to close the position, it will sell five positions at the current price (selling price), and the disk shows: empty (short), spot transaction 10, position difference -6. If it is a long position, it is to take B as the active position, and A can close the position.